Genuine OEM BMW Engine Ignition Module Wiring Harness, part number 12518044501. This harness connects the ignition module to other electrical components for proper engine function. It is part of the engine's ignition system. The harness has a weight of 0.29 kg. Genuine OEM wiring harnesses are manufactured to exact specifications, ensuring reliable electrical connections for the ignition system, which is critical for smooth engine starting and running.